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android / platform / hardware / libhardware / 20a91a6283677016625d722c240ec683c26c91cf / . / include / hardware / gps.h
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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_INCLUDE_HARDWARE_GPS_H
#define ANDROID_INCLUDE_HARDWARE_GPS_H
#include <stdint.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include <pthread.h>
#include <sys/socket.h>
#include <stdbool.h>
#include <hardware/hardware.h>
#include "gnss-base.h"
__BEGIN_DECLS
/*
* Enums defined in HIDL in hardware/interfaces are auto-generated and present
* in gnss-base.h.
*/
/* for compatibility */
/** Maximum number of SVs for gps_sv_status_callback(). */
#define GNSS_MAX_SVS GNSS_MAX_SVS_COUNT
/** Maximum number of Measurements in gnss_measurement_callback(). */
#define GNSS_MAX_MEASUREMENT GNSS_MAX_SVS_COUNT
#define GPS_REQUEST_AGPS_DATA_CONN GNSS_REQUEST_AGNSS_DATA_CONN
#define GPS_RELEASE_AGPS_DATA_CONN GNSS_RELEASE_AGNSS_DATA_CONN
#define GPS_AGPS_DATA_CONNECTED GNSS_AGNSS_DATA_CONNECTED
#define GPS_AGPS_DATA_CONN_DONE GNSS_AGNSS_DATA_CONN_DONE
#define GPS_AGPS_DATA_CONN_FAILED GNSS_AGNSS_DATA_CONN_FAILED
#define AGPS_RIL_NETWORK_TYPE_MOBILE_MMS AGPS_RIL_NETWORK_TYPE_MMS
#define AGPS_RIL_NETWORK_TYPE_MOBILE_SUPL AGPS_RIL_NETWORK_TYPE_SUPL
#define AGPS_RIL_NETWORK_TTYPE_MOBILE_DUN AGPS_RIL_NETWORK_TYPE_DUN
#define AGPS_RIL_NETWORK_TTYPE_MOBILE_HIPRI AGPS_RIL_NETWORK_TYPE_HIPRI
#define AGPS_RIL_NETWORK_TTYPE_WIMAX AGPS_RIL_NETWORK_TYPE_WIMAX
#define GNSS_MULTIPATH_INDICATOR_NOT_PRESENT GNSS_MULTIPATH_INDICATIOR_NOT_PRESENT
#define AGPS_SETID_TYPE_MSISDN AGPS_SETID_TYPE_MSISDM
#define GPS_MEASUREMENT_OPERATION_SUCCESS GPS_MEASUREMENT_SUCCESS
#define GPS_NAVIGATION_MESSAGE_OPERATION_SUCCESS GPS_NAVIGATION_MESSAGE_SUCCESS
#define GNSS_NAVIGATION_MESSAGE_TYPE_GPS_L1CA GNSS_NAVIGATION_MESSAGE_TYPE_GNSS_L1CA
#define GNSS_NAVIGATION_MESSAGE_TYPE_GPS_L2CNAV GNSS_NAVIGATION_MESSAGE_TYPE_GNSS_L2CNAV
#define GNSS_NAVIGATION_MESSAGE_TYPE_GPS_L5CNAV GNSS_NAVIGATION_MESSAGE_TYPE_GNSS_L5CNAV
#define GNSS_NAVIGATION_MESSAGE_TYPE_GPS_CNAV2 GNSS_NAVIGATION_MESSAGE_TYPE_GNSS_CNAV2
#define GPS_LOCATION_HAS_ACCURACY GPS_LOCATION_HAS_HORIZONTAL_ACCURACY
/**
* The id of this module
*/
#define GPS_HARDWARE_MODULE_ID "gps"
/** Milliseconds since January 1, 1970 */
typedef int64_t GpsUtcTime;
/** Maximum number of SVs for gps_sv_status_callback(). */
#define GPS_MAX_SVS 32
/** Maximum number of Measurements in gps_measurement_callback(). */
#define GPS_MAX_MEASUREMENT 32
/** Requested operational mode for GPS operation. */
typedef uint32_t GpsPositionMode;
/** Requested recurrence mode for GPS operation. */
typedef uint32_t GpsPositionRecurrence;
/** GPS status event values. */
typedef uint16_t GpsStatusValue;
/** Flags to indicate which values are valid in a GpsLocation. */
typedef uint16_t GpsLocationFlags;
/**
* Flags used to specify which aiding data to delete when calling
* delete_aiding_data().
*/
typedef uint16_t GpsAidingData;
/** AGPS type */
typedef uint16_t AGpsType;
typedef uint16_t AGpsSetIDType;
typedef uint16_t ApnIpType;
/**
* String length constants
*/
#define GPS_NI_SHORT_STRING_MAXLEN 256
#define GPS_NI_LONG_STRING_MAXLEN 2048
/**
* GpsNiType constants
*/
typedef uint32_t GpsNiType;
/**
* GpsNiNotifyFlags constants
*/
typedef uint32_t GpsNiNotifyFlags;
/**
* GPS NI responses, used to define the response in
* NI structures
*/
typedef int GpsUserResponseType;
/**
* NI data encoding scheme
*/
typedef int GpsNiEncodingType;
/** AGPS status event values. */
typedef uint16_t AGpsStatusValue;
typedef uint16_t AGpsRefLocationType;
/* Deprecated, to be removed in the next Android release. */
#define AGPS_REG_LOCATION_TYPE_MAC 3
/* The following typedef together with its constants below are deprecated, and
* will be removed in the next release. */
typedef uint16_t GpsClockFlags;
#define GPS_CLOCK_HAS_LEAP_SECOND (1<<0)
#define GPS_CLOCK_HAS_TIME_UNCERTAINTY (1<<1)
#define GPS_CLOCK_HAS_FULL_BIAS (1<<2)
#define GPS_CLOCK_HAS_BIAS (1<<3)
#define GPS_CLOCK_HAS_BIAS_UNCERTAINTY (1<<4)
#define GPS_CLOCK_HAS_DRIFT (1<<5)
#define GPS_CLOCK_HAS_DRIFT_UNCERTAINTY (1<<6)
/**
* Flags to indicate what fields in GnssClock are valid.
*/
typedef uint16_t GnssClockFlags;
/* The following typedef together with its constants below are deprecated, and
* will be removed in the next release. */
typedef uint8_t GpsClockType;
#define GPS_CLOCK_TYPE_UNKNOWN 0
#define GPS_CLOCK_TYPE_LOCAL_HW_TIME 1
#define GPS_CLOCK_TYPE_GPS_TIME 2
/* The following typedef together with its constants below are deprecated, and
* will be removed in the next release. */
typedef uint32_t GpsMeasurementFlags;
#define GPS_MEASUREMENT_HAS_SNR (1<<0)
#define GPS_MEASUREMENT_HAS_ELEVATION (1<<1)
#define GPS_MEASUREMENT_HAS_ELEVATION_UNCERTAINTY (1<<2)
#define GPS_MEASUREMENT_HAS_AZIMUTH (1<<3)
#define GPS_MEASUREMENT_HAS_AZIMUTH_UNCERTAINTY (1<<4)
#define GPS_MEASUREMENT_HAS_PSEUDORANGE (1<<5)
#define GPS_MEASUREMENT_HAS_PSEUDORANGE_UNCERTAINTY (1<<6)
#define GPS_MEASUREMENT_HAS_CODE_PHASE (1<<7)
#define GPS_MEASUREMENT_HAS_CODE_PHASE_UNCERTAINTY (1<<8)
#define GPS_MEASUREMENT_HAS_CARRIER_FREQUENCY (1<<9)
#define GPS_MEASUREMENT_HAS_CARRIER_CYCLES (1<<10)
#define GPS_MEASUREMENT_HAS_CARRIER_PHASE (1<<11)
#define GPS_MEASUREMENT_HAS_CARRIER_PHASE_UNCERTAINTY (1<<12)
#define GPS_MEASUREMENT_HAS_BIT_NUMBER (1<<13)
#define GPS_MEASUREMENT_HAS_TIME_FROM_LAST_BIT (1<<14)
#define GPS_MEASUREMENT_HAS_DOPPLER_SHIFT (1<<15)
#define GPS_MEASUREMENT_HAS_DOPPLER_SHIFT_UNCERTAINTY (1<<16)
#define GPS_MEASUREMENT_HAS_USED_IN_FIX (1<<17)
#define GPS_MEASUREMENT_HAS_UNCORRECTED_PSEUDORANGE_RATE (1<<18)
/**
* Flags to indicate what fields in GnssMeasurement are valid.
*/
typedef uint32_t GnssMeasurementFlags;
/* The following typedef together with its constants below are deprecated, and
* will be removed in the next release. */
typedef uint8_t GpsLossOfLock;
#define GPS_LOSS_OF_LOCK_UNKNOWN 0
#define GPS_LOSS_OF_LOCK_OK 1
#define GPS_LOSS_OF_LOCK_CYCLE_SLIP 2
/* The following typedef together with its constants below are deprecated, and
* will be removed in the next release. Use GnssMultipathIndicator instead.
*/
typedef uint8_t GpsMultipathIndicator;
#define GPS_MULTIPATH_INDICATOR_UNKNOWN 0
#define GPS_MULTIPATH_INDICATOR_DETECTED 1
#define GPS_MULTIPATH_INDICATOR_NOT_USED 2
/**
* Enumeration of available values for the GNSS Measurement's multipath
* indicator.
*/
typedef uint8_t GnssMultipathIndicator;
/* The following typedef together with its constants below are deprecated, and
* will be removed in the next release. */
typedef uint16_t GpsMeasurementState;
#define GPS_MEASUREMENT_STATE_UNKNOWN 0
#define GPS_MEASUREMENT_STATE_CODE_LOCK (1<<0)
#define GPS_MEASUREMENT_STATE_BIT_SYNC (1<<1)
#define GPS_MEASUREMENT_STATE_SUBFRAME_SYNC (1<<2)
#define GPS_MEASUREMENT_STATE_TOW_DECODED (1<<3)
#define GPS_MEASUREMENT_STATE_MSEC_AMBIGUOUS (1<<4)
/**
* Flags indicating the GNSS measurement state.
*
* The expected behavior here is for GPS HAL to set all the flags that applies.
* For example, if the state for a satellite is only C/A code locked and bit
* synchronized, and there is still millisecond ambiguity, the state should be
* set as:
*
* GNSS_MEASUREMENT_STATE_CODE_LOCK | GNSS_MEASUREMENT_STATE_BIT_SYNC |
* GNSS_MEASUREMENT_STATE_MSEC_AMBIGUOUS
*
* If GNSS is still searching for a satellite, the corresponding state should be
* set to GNSS_MEASUREMENT_STATE_UNKNOWN(0).
*/
typedef uint32_t GnssMeasurementState;
/* The following typedef together with its constants below are deprecated, and
* will be removed in the next release. */
typedef uint16_t GpsAccumulatedDeltaRangeState;
#define GPS_ADR_STATE_UNKNOWN 0
#define GPS_ADR_STATE_VALID (1<<0)
#define GPS_ADR_STATE_RESET (1<<1)
#define GPS_ADR_STATE_CYCLE_SLIP (1<<2)
/**
* Flags indicating the Accumulated Delta Range's states.
*/
typedef uint16_t GnssAccumulatedDeltaRangeState;
/* The following typedef together with its constants below are deprecated, and
* will be removed in the next release. */
typedef uint8_t GpsNavigationMessageType;
#define GPS_NAVIGATION_MESSAGE_TYPE_UNKNOWN 0
#define GPS_NAVIGATION_MESSAGE_TYPE_L1CA 1
#define GPS_NAVIGATION_MESSAGE_TYPE_L2CNAV 2
#define GPS_NAVIGATION_MESSAGE_TYPE_L5CNAV 3
#define GPS_NAVIGATION_MESSAGE_TYPE_CNAV2 4
/**
* Enumeration of available values to indicate the GNSS Navigation message
* types.
*
* For convenience, first byte is the GnssConstellationType on which that signal
* is typically transmitted
*/
typedef int16_t GnssNavigationMessageType;
/**
* Status of Navigation Message
* When a message is received properly without any parity error in its navigation words, the
* status should be set to NAV_MESSAGE_STATUS_PARITY_PASSED. But if a message is received
* with words that failed parity check, but GPS is able to correct those words, the status
* should be set to NAV_MESSAGE_STATUS_PARITY_REBUILT.
* No need to send any navigation message that contains words with parity error and cannot be
* corrected.
*/
typedef uint16_t NavigationMessageStatus;
/* This constant is deprecated, and will be removed in the next release. */
#define NAV_MESSAGE_STATUS_UNKONW 0
/**
* Flags that indicate information about the satellite
*/
typedef uint8_t GnssSvFlags;
/**
* Constellation type of GnssSvInfo
*/
typedef uint8_t GnssConstellationType;
/**
* Name for the GPS XTRA interface.
*/
#define GPS_XTRA_INTERFACE "gps-xtra"
/**
* Name for the GPS DEBUG interface.
*/
#define GPS_DEBUG_INTERFACE "gps-debug"
/**
* Name for the AGPS interface.
*/
#define AGPS_INTERFACE "agps"
/**
* Name of the Supl Certificate interface.
*/
#define SUPL_CERTIFICATE_INTERFACE "supl-certificate"
/**
* Name for NI interface
*/
#define GPS_NI_INTERFACE "gps-ni"
/**
* Name for the AGPS-RIL interface.
*/
#define AGPS_RIL_INTERFACE "agps_ril"
/**
* Name for the GPS_Geofencing interface.
*/
#define GPS_GEOFENCING_INTERFACE "gps_geofencing"
/**
* Name of the GPS Measurements interface.
*/
#define GPS_MEASUREMENT_INTERFACE "gps_measurement"
/**
* Name of the GPS navigation message interface.
*/
#define GPS_NAVIGATION_MESSAGE_INTERFACE "gps_navigation_message"
/**
* Name of the GNSS/GPS configuration interface.
*/
#define GNSS_CONFIGURATION_INTERFACE "gnss_configuration"
/** Represents a location. */
typedef struct {
/** set to sizeof(GpsLocation) */
size_t size;
/** Contains GpsLocationFlags bits. */
uint16_t flags;
/** Represents latitude in degrees. */
double latitude;
/** Represents longitude in degrees. */
double longitude;
/**
* Represents altitude in meters above the WGS 84 reference ellipsoid.
*/
double altitude;
/** Represents speed in meters per second. */
float speed;
/** Represents heading in degrees. */
float bearing;
/** Represents expected accuracy in meters. */
float accuracy;
/** Timestamp for the location fix. */
GpsUtcTime timestamp;
} GpsLocation;
/** Represents the status. */
typedef struct {
/** set to sizeof(GpsStatus) */
size_t size;
GpsStatusValue status;
} GpsStatus;
/**
* Legacy struct to represents SV information.
* Deprecated, to be removed in the next Android release.
* Use GnssSvInfo instead.
*/
typedef struct {
/** set to sizeof(GpsSvInfo) */
size_t size;
/** Pseudo-random number for the SV. */
int prn;
/** Signal to noise ratio. */
float snr;
/** Elevation of SV in degrees. */
float elevation;
/** Azimuth of SV in degrees. */
float azimuth;
} GpsSvInfo;
typedef struct {
/** set to sizeof(GnssSvInfo) */
size_t size;
/**
* Pseudo-random number for the SV, or FCN/OSN number for Glonass. The
* distinction is made by looking at constellation field. Values should be
* in the range of:
*
* - GPS: 1-32
* - SBAS: 120-151, 183-192
* - GLONASS: 1-24, the orbital slot number (OSN), if known. Or, if not:
* 93-106, the frequency channel number (FCN) (-7 to +6) offset by + 100
* i.e. report an FCN of -7 as 93, FCN of 0 as 100, and FCN of +6 as 106.
* - QZSS: 193-200
* - Galileo: 1-36
* - Beidou: 1-37
*/
int16_t svid;
/**
* Defines the constellation of the given SV. Value should be one of those
* GNSS_CONSTELLATION_* constants
*/
GnssConstellationType constellation;
/**
* Carrier-to-noise density in dB-Hz, typically in the range [0, 63].
* It contains the measured C/N0 value for the signal at the antenna port.
*
* This is a mandatory value.
*/
float c_n0_dbhz;
/** Elevation of SV in degrees. */
float elevation;
/** Azimuth of SV in degrees. */
float azimuth;
/**
* Contains additional data about the given SV. Value should be one of those
* GNSS_SV_FLAGS_* constants
*/
GnssSvFlags flags;
} GnssSvInfo;
/**
* Legacy struct to represents SV status.
* Deprecated, to be removed in the next Android release.
* Use GnssSvStatus instead.
*/
typedef struct {
/** set to sizeof(GpsSvStatus) */
size_t size;
int num_svs;
GpsSvInfo sv_list[GPS_MAX_SVS];
uint32_t ephemeris_mask;
uint32_t almanac_mask;
uint32_t used_in_fix_mask;
} GpsSvStatus;
/**
* Represents SV status.
*/
typedef struct {
/** set to sizeof(GnssSvStatus) */
size_t size;
/** Number of GPS SVs currently visible, refers to the SVs stored in sv_list */
int num_svs;
/**
* Pointer to an array of SVs information for all GNSS constellations,
* except GPS, which is reported using sv_list
*/
GnssSvInfo gnss_sv_list[GNSS_MAX_SVS];
} GnssSvStatus;
/* CellID for 2G, 3G and LTE, used in AGPS. */
typedef struct {
AGpsRefLocationType type;
/** Mobile Country Code. */
uint16_t mcc;
/** Mobile Network Code .*/
uint16_t mnc;
/** Location Area Code in 2G, 3G and LTE. In 3G lac is discarded. In LTE,
* lac is populated with tac, to ensure that we don't break old clients that
* might rely in the old (wrong) behavior.
*/
uint16_t lac;
/** Cell id in 2G. Utran Cell id in 3G. Cell Global Id EUTRA in LTE. */
uint32_t cid;
/** Tracking Area Code in LTE. */
uint16_t tac;
/** Physical Cell id in LTE (not used in 2G and 3G) */
uint16_t pcid;
} AGpsRefLocationCellID;
typedef struct {
uint8_t mac[6];
} AGpsRefLocationMac;
/** Represents ref locations */
typedef struct {
AGpsRefLocationType type;
union {
AGpsRefLocationCellID cellID;
AGpsRefLocationMac mac;
} u;
} AGpsRefLocation;
/**
* Callback with location information. Can only be called from a thread created
* by create_thread_cb.
*/
typedef void (* gps_location_callback)(GpsLocation* location);
/**
* Callback with status information. Can only be called from a thread created by
* create_thread_cb.
*/
typedef void (* gps_status_callback)(GpsStatus* status);
/**
* Legacy callback with SV status information.
* Can only be called from a thread created by create_thread_cb.
*
* This callback is deprecated, and will be removed in the next release. Use
* gnss_sv_status_callback() instead.
*/
typedef void (* gps_sv_status_callback)(GpsSvStatus* sv_info);
/**
* Callback with SV status information.
* Can only be called from a thread created by create_thread_cb.
*/
typedef void (* gnss_sv_status_callback)(GnssSvStatus* sv_info);
/**
* Callback for reporting NMEA sentences. Can only be called from a thread
* created by create_thread_cb.
*/
typedef void (* gps_nmea_callback)(GpsUtcTime timestamp, const char* nmea, int length);
/**
* Callback to inform framework of the GPS engine's capabilities. Capability
* parameter is a bit field of GPS_CAPABILITY_* flags.
*/
typedef void (* gps_set_capabilities)(uint32_t capabilities);
/**
* Callback utility for acquiring the GPS wakelock. This can be used to prevent
* the CPU from suspending while handling GPS events.
*/
typedef void (* gps_acquire_wakelock)();
/** Callback utility for releasing the GPS wakelock. */
typedef void (* gps_release_wakelock)();
/** Callback for requesting NTP time */
typedef void (* gps_request_utc_time)();
/**
* Callback for creating a thread that can call into the Java framework code.
* This must be used to create any threads that report events up to the
* framework.
*/
typedef pthread_t (* gps_create_thread)(const char* name, void (*start)(void *), void* arg);
/**
* Provides information about how new the underlying GPS/GNSS hardware and
* software is.
*
* This information will be available for Android Test Applications. If a GPS
* HAL does not provide this information, it will be considered "2015 or
* earlier".
*
* If a GPS HAL does provide this information, then newer years will need to
* meet newer CTS standards. E.g. if the date are 2016 or above, then N+ level
* GpsMeasurement support will be verified.
*/
typedef struct {
/** Set to sizeof(GnssSystemInfo) */
size_t size;
/* year in which the last update was made to the underlying hardware/firmware
* used to capture GNSS signals, e.g. 2016 */
uint16_t year_of_hw;
} GnssSystemInfo;
/**
* Callback to inform framework of the engine's hardware version information.
*/
typedef void (*gnss_set_system_info)(const GnssSystemInfo* info);
/** New GPS callback structure. */
typedef struct {
/** set to sizeof(GpsCallbacks) */
size_t size;
gps_location_callback location_cb;
gps_status_callback status_cb;
gps_sv_status_callback sv_status_cb;
gps_nmea_callback nmea_cb;
gps_set_capabilities set_capabilities_cb;
gps_acquire_wakelock acquire_wakelock_cb;
gps_release_wakelock release_wakelock_cb;
gps_create_thread create_thread_cb;
gps_request_utc_time request_utc_time_cb;
gnss_set_system_info set_system_info_cb;
gnss_sv_status_callback gnss_sv_status_cb;
} GpsCallbacks;
/** Represents the standard GPS interface. */
typedef struct {
/** set to sizeof(GpsInterface) */
size_t size;
/**
* Opens the interface and provides the callback routines
* to the implementation of this interface.
*/
int (*init)( GpsCallbacks* callbacks );
/** Starts navigating. */
int (*start)( void );
/** Stops navigating. */
int (*stop)( void );
/** Closes the interface. */
void (*cleanup)( void );
/** Injects the current time. */
int (*inject_time)(GpsUtcTime time, int64_t timeReference,
int uncertainty);
/**
* Injects current location from another location provider (typically cell
* ID). Latitude and longitude are measured in degrees expected accuracy is
* measured in meters
*/
int (*inject_location)(double latitude, double longitude, float accuracy);
/**
* Specifies that the next call to start will not use the
* information defined in the flags. GPS_DELETE_ALL is passed for
* a cold start.
*/
void (*delete_aiding_data)(GpsAidingData flags);
/**
* min_interval represents the time between fixes in milliseconds.
* preferred_accuracy represents the requested fix accuracy in meters.
* preferred_time represents the requested time to first fix in milliseconds.
*
* 'mode' parameter should be one of GPS_POSITION_MODE_MS_BASED
* or GPS_POSITION_MODE_STANDALONE.
* It is allowed by the platform (and it is recommended) to fallback to
* GPS_POSITION_MODE_MS_BASED if GPS_POSITION_MODE_MS_ASSISTED is passed in, and
* GPS_POSITION_MODE_MS_BASED is supported.
*/
int (*set_position_mode)(GpsPositionMode mode, GpsPositionRecurrence recurrence,
uint32_t min_interval, uint32_t preferred_accuracy, uint32_t preferred_time);
/** Get a pointer to extension information. */
const void* (*get_extension)(const char* name);
} GpsInterface;
/**
* Callback to request the client to download XTRA data. The client should
* download XTRA data and inject it by calling inject_xtra_data(). Can only be
* called from a thread created by create_thread_cb.
*/
typedef void (* gps_xtra_download_request)();
/** Callback structure for the XTRA interface. */
typedef struct {
gps_xtra_download_request download_request_cb;
gps_create_thread create_thread_cb;
} GpsXtraCallbacks;
/** Extended interface for XTRA support. */
typedef struct {
/** set to sizeof(GpsXtraInterface) */
size_t size;
/**
* Opens the XTRA interface and provides the callback routines
* to the implementation of this interface.
*/
int (*init)( GpsXtraCallbacks* callbacks );
/** Injects XTRA data into the GPS. */
int (*inject_xtra_data)( char* data, int length );
} GpsXtraInterface;
/** Extended interface for DEBUG support. */
typedef struct {
/** set to sizeof(GpsDebugInterface) */
size_t size;
/**
* This function should return any information that the native
* implementation wishes to include in a bugreport.
*/
size_t (*get_internal_state)(char* buffer, size_t bufferSize);
} GpsDebugInterface;
/*
* Represents the status of AGPS augmented to support IPv4 and IPv6.
*/
typedef struct {
/** set to sizeof(AGpsStatus) */
size_t size;
AGpsType type;
AGpsStatusValue status;
/**
* Must be set to a valid IPv4 address if the field 'addr' contains an IPv4
* address, or set to INADDR_NONE otherwise.
*/
uint32_t ipaddr;
/**
* Must contain the IPv4 (AF_INET) or IPv6 (AF_INET6) address to report.
* Any other value of addr.ss_family will be rejected.
*/
struct sockaddr_storage addr;
} AGpsStatus;
/**
* Callback with AGPS status information. Can only be called from a thread
* created by create_thread_cb.
*/
typedef void (* agps_status_callback)(AGpsStatus* status);
/** Callback structure for the AGPS interface. */
typedef struct {
agps_status_callback status_cb;
gps_create_thread create_thread_cb;
} AGpsCallbacks;
/**
* Extended interface for AGPS support, it is augmented to enable to pass
* extra APN data.
*/
typedef struct {
/** set to sizeof(AGpsInterface) */
size_t size;
/**
* Opens the AGPS interface and provides the callback routines to the
* implementation of this interface.
*/
void (*init)(AGpsCallbacks* callbacks);
/**
* Deprecated.
* If the HAL supports AGpsInterface_v2 this API will not be used, see
* data_conn_open_with_apn_ip_type for more information.
*/
int (*data_conn_open)(const char* apn);
/**
* Notifies that the AGPS data connection has been closed.
*/
int (*data_conn_closed)();
/**
* Notifies that a data connection is not available for AGPS.
*/
int (*data_conn_failed)();
/**
* Sets the hostname and port for the AGPS server.
*/
int (*set_server)(AGpsType type, const char* hostname, int port);
/**
* Notifies that a data connection is available and sets the name of the
* APN, and its IP type, to be used for SUPL connections.
*/
int (*data_conn_open_with_apn_ip_type)(
const char* apn,
ApnIpType apnIpType);
} AGpsInterface;
/** Error codes associated with certificate operations */
#define AGPS_CERTIFICATE_OPERATION_SUCCESS 0
#define AGPS_CERTIFICATE_ERROR_GENERIC -100
#define AGPS_CERTIFICATE_ERROR_TOO_MANY_CERTIFICATES -101
/** A data structure that represents an X.509 certificate using DER encoding */
typedef struct {
size_t length;
u_char* data;
} DerEncodedCertificate;
/**
* A type definition for SHA1 Fingerprints used to identify X.509 Certificates
* The Fingerprint is a digest of the DER Certificate that uniquely identifies it.
*/
typedef struct {
u_char data[20];
} Sha1CertificateFingerprint;
/** AGPS Interface to handle SUPL certificate operations */
typedef struct {
/** set to sizeof(SuplCertificateInterface) */
size_t size;
/**
* Installs a set of Certificates used for SUPL connections to the AGPS server.
* If needed the HAL should find out internally any certificates that need to be removed to
* accommodate the certificates to install.
* The certificates installed represent a full set of valid certificates needed to connect to
* AGPS SUPL servers.
* The list of certificates is required, and all must be available at the same time, when trying
* to establish a connection with the AGPS Server.
*
* Parameters:
* certificates - A pointer to an array of DER encoded certificates that are need to be
* installed in the HAL.
* length - The number of certificates to install.
* Returns:
* AGPS_CERTIFICATE_OPERATION_SUCCESS if the operation is completed successfully
* AGPS_CERTIFICATE_ERROR_TOO_MANY_CERTIFICATES if the HAL cannot store the number of
* certificates attempted to be installed, the state of the certificates stored should
* remain the same as before on this error case.
*
* IMPORTANT:
* If needed the HAL should find out internally the set of certificates that need to be
* removed to accommodate the certificates to install.
*/
int (*install_certificates) ( const DerEncodedCertificate* certificates, size_t length );
/**
* Notifies the HAL that a list of certificates used for SUPL connections are revoked. It is
* expected that the given set of certificates is removed from the internal store of the HAL.
*
* Parameters:
* fingerprints - A pointer to an array of SHA1 Fingerprints to identify the set of
* certificates to revoke.
* length - The number of fingerprints provided.
* Returns:
* AGPS_CERTIFICATE_OPERATION_SUCCESS if the operation is completed successfully.
*
* IMPORTANT:
* If any of the certificates provided (through its fingerprint) is not known by the HAL,
* it should be ignored and continue revoking/deleting the rest of them.
*/
int (*revoke_certificates) ( const Sha1CertificateFingerprint* fingerprints, size_t length );
} SuplCertificateInterface;
/** Represents an NI request */
typedef struct {
/** set to sizeof(GpsNiNotification) */
size_t size;
/**
* An ID generated by HAL to associate NI notifications and UI
* responses
*/
int notification_id;
/**
* An NI type used to distinguish different categories of NI
* events, such as GPS_NI_TYPE_VOICE, GPS_NI_TYPE_UMTS_SUPL, ...
*/
GpsNiType ni_type;
/**
* Notification/verification options, combinations of GpsNiNotifyFlags constants
*/
GpsNiNotifyFlags notify_flags;
/**
* Timeout period to wait for user response.
* Set to 0 for no time out limit.
*/
int timeout;
/**
* Default response when time out.
*/
GpsUserResponseType default_response;
/**
* Requestor ID
*/
char requestor_id[GPS_NI_SHORT_STRING_MAXLEN];
/**
* Notification message. It can also be used to store client_id in some cases
*/
char text[GPS_NI_LONG_STRING_MAXLEN];
/**
* Client name decoding scheme
*/
GpsNiEncodingType requestor_id_encoding;
/**
* Client name decoding scheme
*/
GpsNiEncodingType text_encoding;
/**
* A pointer to extra data. Format:
* key_1 = value_1
* key_2 = value_2
*/
char extras[GPS_NI_LONG_STRING_MAXLEN];
} GpsNiNotification;
/**
* Callback with NI notification. Can only be called from a thread created by
* create_thread_cb.
*/
typedef void (*gps_ni_notify_callback)(GpsNiNotification *notification);
/** GPS NI callback structure. */
typedef struct
{
/**
* Sends the notification request from HAL to GPSLocationProvider.
*/
gps_ni_notify_callback notify_cb;
gps_create_thread create_thread_cb;
} GpsNiCallbacks;
/**
* Extended interface for Network-initiated (NI) support.
*/
typedef struct
{
/** set to sizeof(GpsNiInterface) */
size_t size;
/** Registers the callbacks for HAL to use. */
void (*init) (GpsNiCallbacks *callbacks);
/** Sends a response to HAL. */
void (*respond) (int notif_id, GpsUserResponseType user_response);
} GpsNiInterface;
struct gps_device_t {
struct hw_device_t common;
/**
* Set the provided lights to the provided values.
*
* Returns: 0 on succes, error code on failure.
*/
const GpsInterface* (*get_gps_interface)(struct gps_device_t* dev);
};
#define AGPS_RIL_REQUEST_REFLOC_CELLID (1<<0L)
#define AGPS_RIL_REQUEST_REFLOC_MAC (1<<1L)
typedef void (*agps_ril_request_set_id)(uint32_t flags);
typedef void (*agps_ril_request_ref_loc)(uint32_t flags);
typedef struct {
agps_ril_request_set_id request_setid;
agps_ril_request_ref_loc request_refloc;
gps_create_thread create_thread_cb;
} AGpsRilCallbacks;
/** Extended interface for AGPS_RIL support. */
typedef struct {
/** set to sizeof(AGpsRilInterface) */
size_t size;
/**
* Opens the AGPS interface and provides the callback routines
* to the implementation of this interface.
*/
void (*init)( AGpsRilCallbacks* callbacks );
/**
* Sets the reference location.
*/
void (*set_ref_location) (const AGpsRefLocation *agps_reflocation, size_t sz_struct);
/**
* Sets the set ID.
*/
void (*set_set_id) (AGpsSetIDType type, const char* setid);
/**
* Send network initiated message.
*/
void (*ni_message) (uint8_t *msg, size_t len);
/**
* Notify GPS of network status changes.
* These parameters match values in the android.net.NetworkInfo class.
*/
void (*update_network_state) (int connected, int type, int roaming, const char* extra_info);
/**
* Notify GPS of network status changes.
* These parameters match values in the android.net.NetworkInfo class.
*/
void (*update_network_availability) (int avaiable, const char* apn);
} AGpsRilInterface;
/**
* GPS Geofence.
* There are 3 states associated with a Geofence: Inside, Outside, Unknown.
* There are 3 transitions: ENTERED, EXITED, UNCERTAIN.
*
* An example state diagram with confidence level: 95% and Unknown time limit
* set as 30 secs is shown below. (confidence level and Unknown time limit are
* explained latter)
* ____________________________
* | Unknown (30 secs) |
* """"""""""""""""""""""""""""
* ^ | | ^
* UNCERTAIN| |ENTERED EXITED| |UNCERTAIN
* | v v |
* ________ EXITED _________
* | Inside | -----------> | Outside |
* | | <----------- | |
* """""""" ENTERED """""""""
*
* Inside state: We are 95% confident that the user is inside the geofence.
* Outside state: We are 95% confident that the user is outside the geofence
* Unknown state: Rest of the time.
*
* The Unknown state is better explained with an example:
*
* __________
* | c|
* | ___ | _______
* | |a| | | b |
* | """ | """""""
* | |
* """"""""""
* In the diagram above, "a" and "b" are 2 geofences and "c" is the accuracy
* circle reported by the GPS subsystem. Now with regard to "b", the system is
* confident that the user is outside. But with regard to "a" is not confident
* whether it is inside or outside the geofence. If the accuracy remains the
* same for a sufficient period of time, the UNCERTAIN transition would be
* triggered with the state set to Unknown. If the accuracy improves later, an
* appropriate transition should be triggered. This "sufficient period of time"
* is defined by the parameter in the add_geofence_area API.
* In other words, Unknown state can be interpreted as a state in which the
* GPS subsystem isn't confident enough that the user is either inside or
* outside the Geofence. It moves to Unknown state only after the expiry of the
* timeout.
*
* The geofence callback needs to be triggered for the ENTERED and EXITED
* transitions, when the GPS system is confident that the user has entered
* (Inside state) or exited (Outside state) the Geofence. An implementation
* which uses a value of 95% as the confidence is recommended. The callback
* should be triggered only for the transitions requested by the
* add_geofence_area call.
*
* Even though the diagram and explanation talks about states and transitions,
* the callee is only interested in the transistions. The states are mentioned
* here for illustrative purposes.
*
* Startup Scenario: When the device boots up, if an application adds geofences,
* and then we get an accurate GPS location fix, it needs to trigger the
* appropriate (ENTERED or EXITED) transition for every Geofence it knows about.
* By default, all the Geofences will be in the Unknown state.
*
* When the GPS system is unavailable, gps_geofence_status_callback should be
* called to inform the upper layers of the same. Similarly, when it becomes
* available the callback should be called. This is a global state while the
* UNKNOWN transition described above is per geofence.
*
* An important aspect to note is that users of this API (framework), will use
* other subsystems like wifi, sensors, cell to handle Unknown case and
* hopefully provide a definitive state transition to the third party
* application. GPS Geofence will just be a signal indicating what the GPS
* subsystem knows about the Geofence.
*
*/
/**
* The callback associated with the geofence.
* Parameters:
* geofence_id - The id associated with the add_geofence_area.
* location - The current GPS location.
* transition - Can be one of GPS_GEOFENCE_ENTERED, GPS_GEOFENCE_EXITED,
* GPS_GEOFENCE_UNCERTAIN.
* timestamp - Timestamp when the transition was detected.
*
* The callback should only be called when the caller is interested in that
* particular transition. For instance, if the caller is interested only in
* ENTERED transition, then the callback should NOT be called with the EXITED
* transition.
*
* IMPORTANT: If a transition is triggered resulting in this callback, the GPS
* subsystem will wake up the application processor, if its in suspend state.
*/
typedef void (*gps_geofence_transition_callback) (int32_t geofence_id, GpsLocation* location,
int32_t transition, GpsUtcTime timestamp);
/**
* The callback associated with the availability of the GPS system for geofencing
* monitoring. If the GPS system determines that it cannot monitor geofences
* because of lack of reliability or unavailability of the GPS signals, it will
* call this callback with GPS_GEOFENCE_UNAVAILABLE parameter.
*
* Parameters:
* status - GPS_GEOFENCE_UNAVAILABLE or GPS_GEOFENCE_AVAILABLE.
* last_location - Last known location.
*/
typedef void (*gps_geofence_status_callback) (int32_t status, GpsLocation* last_location);
/**
* The callback associated with the add_geofence call.
*
* Parameter:
* geofence_id - Id of the geofence.
* status - GPS_GEOFENCE_OPERATION_SUCCESS
* GPS_GEOFENCE_ERROR_TOO_MANY_GEOFENCES - geofence limit has been reached.
* GPS_GEOFENCE_ERROR_ID_EXISTS - geofence with id already exists
* GPS_GEOFENCE_ERROR_INVALID_TRANSITION - the monitorTransition contains an
* invalid transition
* GPS_GEOFENCE_ERROR_GENERIC - for other errors.
*/
typedef void (*gps_geofence_add_callback) (int32_t geofence_id, int32_t status);
/**
* The callback associated with the remove_geofence call.
*
* Parameter:
* geofence_id - Id of the geofence.
* status - GPS_GEOFENCE_OPERATION_SUCCESS
* GPS_GEOFENCE_ERROR_ID_UNKNOWN - for invalid id
* GPS_GEOFENCE_ERROR_GENERIC for others.
*/
typedef void (*gps_geofence_remove_callback) (int32_t geofence_id, int32_t status);
/**
* The callback associated with the pause_geofence call.
*
* Parameter:
* geofence_id - Id of the geofence.
* status - GPS_GEOFENCE_OPERATION_SUCCESS
* GPS_GEOFENCE_ERROR_ID_UNKNOWN - for invalid id
* GPS_GEOFENCE_ERROR_INVALID_TRANSITION -
* when monitor_transitions is invalid
* GPS_GEOFENCE_ERROR_GENERIC for others.
*/
typedef void (*gps_geofence_pause_callback) (int32_t geofence_id, int32_t status);
/**
* The callback associated with the resume_geofence call.
*
* Parameter:
* geofence_id - Id of the geofence.
* status - GPS_GEOFENCE_OPERATION_SUCCESS
* GPS_GEOFENCE_ERROR_ID_UNKNOWN - for invalid id
* GPS_GEOFENCE_ERROR_GENERIC for others.
*/
typedef void (*gps_geofence_resume_callback) (int32_t geofence_id, int32_t status);
typedef struct {
gps_geofence_transition_callback geofence_transition_callback;
gps_geofence_status_callback geofence_status_callback;
gps_geofence_add_callback geofence_add_callback;
gps_geofence_remove_callback geofence_remove_callback;
gps_geofence_pause_callback geofence_pause_callback;
gps_geofence_resume_callback geofence_resume_callback;
gps_create_thread create_thread_cb;
} GpsGeofenceCallbacks;
/** Extended interface for GPS_Geofencing support */
typedef struct {
/** set to sizeof(GpsGeofencingInterface) */
size_t size;
/**
* Opens the geofence interface and provides the callback routines
* to the implementation of this interface.
*/
void (*init)( GpsGeofenceCallbacks* callbacks );
/**
* Add a geofence area. This api currently supports circular geofences.
* Parameters:
* geofence_id - The id for the geofence. If a geofence with this id
* already exists, an error value (GPS_GEOFENCE_ERROR_ID_EXISTS)
* should be returned.
* latitude, longtitude, radius_meters - The lat, long and radius
* (in meters) for the geofence
* last_transition - The current state of the geofence. For example, if
* the system already knows that the user is inside the geofence,
* this will be set to GPS_GEOFENCE_ENTERED. In most cases, it
* will be GPS_GEOFENCE_UNCERTAIN.
* monitor_transition - Which transitions to monitor. Bitwise OR of
* GPS_GEOFENCE_ENTERED, GPS_GEOFENCE_EXITED and
* GPS_GEOFENCE_UNCERTAIN.
* notification_responsiveness_ms - Defines the best-effort description
* of how soon should the callback be called when the transition
* associated with the Geofence is triggered. For instance, if set
* to 1000 millseconds with GPS_GEOFENCE_ENTERED, the callback
* should be called 1000 milliseconds within entering the geofence.
* This parameter is defined in milliseconds.
* NOTE: This is not to be confused with the rate that the GPS is
* polled at. It is acceptable to dynamically vary the rate of
* sampling the GPS for power-saving reasons; thus the rate of
* sampling may be faster or slower than this.
* unknown_timer_ms - The time limit after which the UNCERTAIN transition
* should be triggered. This parameter is defined in milliseconds.
* See above for a detailed explanation.
*/
void (*add_geofence_area) (int32_t geofence_id, double latitude, double longitude,
double radius_meters, int last_transition, int monitor_transitions,
int notification_responsiveness_ms, int unknown_timer_ms);
/**
* Pause monitoring a particular geofence.
* Parameters:
* geofence_id - The id for the geofence.
*/
void (*pause_geofence) (int32_t geofence_id);
/**
* Resume monitoring a particular geofence.
* Parameters:
* geofence_id - The id for the geofence.
* monitor_transitions - Which transitions to monitor. Bitwise OR of
* GPS_GEOFENCE_ENTERED, GPS_GEOFENCE_EXITED and
* GPS_GEOFENCE_UNCERTAIN.
* This supersedes the value associated provided in the
* add_geofence_area call.
*/
void (*resume_geofence) (int32_t geofence_id, int monitor_transitions);
/**
* Remove a geofence area. After the function returns, no notifications
* should be sent.
* Parameter:
* geofence_id - The id for the geofence.
*/
void (*remove_geofence_area) (int32_t geofence_id);
} GpsGeofencingInterface;
/**
* Legacy struct to represent an estimate of the GPS clock time.
* Deprecated, to be removed in the next Android release.
* Use GnssClock instead.
*/
typedef struct {
/** set to sizeof(GpsClock) */
size_t size;
GpsClockFlags flags;
int16_t leap_second;
GpsClockType type;
int64_t time_ns;
double time_uncertainty_ns;
int64_t full_bias_ns;
double bias_ns;
double bias_uncertainty_ns;
double drift_nsps;
double drift_uncertainty_nsps;
} GpsClock;
/**
* Represents an estimate of the GPS clock time.
*/
typedef struct {
/** set to sizeof(GnssClock) */
size_t size;
/**
* A set of flags indicating the validity of the fields in this data
* structure.
*/
GnssClockFlags flags;
/**
* Leap second data.
* The sign of the value is defined by the following equation:
* utc_time_ns = time_ns - (full_bias_ns + bias_ns) - leap_second *
* 1,000,000,000
*
* If the data is available 'flags' must contain GNSS_CLOCK_HAS_LEAP_SECOND.
*/
int16_t leap_second;
/**
* The GNSS receiver internal clock value. This is the local hardware clock
* value.
*
* For local hardware clock, this value is expected to be monotonically
* increasing while the hardware clock remains power on. (For the case of a
* HW clock that is not continuously on, see the
* hw_clock_discontinuity_count field). The receiver's estimate of GPS time
* can be derived by substracting the sum of full_bias_ns and bias_ns (when
* available) from this value.
*
* This GPS time is expected to be the best estimate of current GPS time
* that GNSS receiver can achieve.
*
* Sub-nanosecond accuracy can be provided by means of the 'bias_ns' field.
* The value contains the 'time uncertainty' in it.
*
* This field is mandatory.
*/
int64_t time_ns;
/**
* 1-Sigma uncertainty associated with the clock's time in nanoseconds.
* The uncertainty is represented as an absolute (single sided) value.
*
* If the data is available, 'flags' must contain
* GNSS_CLOCK_HAS_TIME_UNCERTAINTY. This value is effectively zero (it is
* the reference local clock, by which all other times and time
* uncertainties are measured.) (And thus this field can be not provided,
* per GNSS_CLOCK_HAS_TIME_UNCERTAINTY flag, or provided & set to 0.)
*/
double time_uncertainty_ns;
/**
* The difference between hardware clock ('time' field) inside GPS receiver
* and the true GPS time since 0000Z, January 6, 1980, in nanoseconds.
*
* The sign of the value is defined by the following equation:
* local estimate of GPS time = time_ns - (full_bias_ns + bias_ns)
*
* This value is mandatory if the receiver has estimated GPS time. If the
* computed time is for a non-GPS constellation, the time offset of that
* constellation to GPS has to be applied to fill this value. The error
* estimate for the sum of this and the bias_ns is the bias_uncertainty_ns,
* and the caller is responsible for using this uncertainty (it can be very
* large before the GPS time has been solved for.) If the data is available
* 'flags' must contain GNSS_CLOCK_HAS_FULL_BIAS.
*/
int64_t full_bias_ns;
/**
* Sub-nanosecond bias.
* The error estimate for the sum of this and the full_bias_ns is the
* bias_uncertainty_ns
*
* If the data is available 'flags' must contain GNSS_CLOCK_HAS_BIAS. If GPS
* has computed a position fix. This value is mandatory if the receiver has
* estimated GPS time.
*/
double bias_ns;
/**
* 1-Sigma uncertainty associated with the local estimate of GPS time (clock
* bias) in nanoseconds. The uncertainty is represented as an absolute
* (single sided) value.
*
* If the data is available 'flags' must contain
* GNSS_CLOCK_HAS_BIAS_UNCERTAINTY. This value is mandatory if the receiver
* has estimated GPS time.
*/
double bias_uncertainty_ns;
/**
* The clock's drift in nanoseconds (per second).
*
* A positive value means that the frequency is higher than the nominal
* frequency, and that the (full_bias_ns + bias_ns) is growing more positive
* over time.
*
* The value contains the 'drift uncertainty' in it.
* If the data is available 'flags' must contain GNSS_CLOCK_HAS_DRIFT.
*
* This value is mandatory if the receiver has estimated GNSS time
*/
double drift_nsps;
/**
* 1-Sigma uncertainty associated with the clock's drift in nanoseconds (per second).
* The uncertainty is represented as an absolute (single sided) value.
*
* If the data is available 'flags' must contain
* GNSS_CLOCK_HAS_DRIFT_UNCERTAINTY. If GPS has computed a position fix this
* field is mandatory and must be populated.
*/
double drift_uncertainty_nsps;
/**
* When there are any discontinuities in the HW clock, this field is
* mandatory.
*
* A "discontinuity" is meant to cover the case of a switch from one source
* of clock to another. A single free-running crystal oscillator (XO)
* should generally not have any discontinuities, and this can be set and
* left at 0.
*
* If, however, the time_ns value (HW clock) is derived from a composite of
* sources, that is not as smooth as a typical XO, or is otherwise stopped &
* restarted, then this value shall be incremented each time a discontinuity
* occurs. (E.g. this value may start at zero at device boot-up and
* increment each time there is a change in clock continuity. In the
* unlikely event that this value reaches full scale, rollover (not
* clamping) is required, such that this value continues to change, during
* subsequent discontinuity events.)
*
* While this number stays the same, between GnssClock reports, it can be
* safely assumed that the time_ns value has been running continuously, e.g.
* derived from a single, high quality clock (XO like, or better, that's
* typically used during continuous GNSS signal sampling.)
*
* It is expected, esp. during periods where there are few GNSS signals
* available, that the HW clock be discontinuity-free as long as possible,
* as this avoids the need to use (waste) a GNSS measurement to fully
* re-solve for the GPS clock bias and drift, when using the accompanying
* measurements, from consecutive GnssData reports.
*/
uint32_t hw_clock_discontinuity_count;
} GnssClock;
/**
* Legacy struct to represent a GPS Measurement, it contains raw and computed
* information.
* Deprecated, to be removed in the next Android release.
* Use GnssMeasurement instead.
*/
typedef struct {
/** set to sizeof(GpsMeasurement) */
size_t size;
GpsMeasurementFlags flags;
int8_t prn;
double time_offset_ns;
GpsMeasurementState state;
int64_t received_gps_tow_ns;
int64_t received_gps_tow_uncertainty_ns;
double c_n0_dbhz;
double pseudorange_rate_mps;
double pseudorange_rate_uncertainty_mps;
GpsAccumulatedDeltaRangeState accumulated_delta_range_state;
double accumulated_delta_range_m;
double accumulated_delta_range_uncertainty_m;
double pseudorange_m;
double pseudorange_uncertainty_m;
double code_phase_chips;
double code_phase_uncertainty_chips;
float carrier_frequency_hz;
int64_t carrier_cycles;
double carrier_phase;
double carrier_phase_uncertainty;
GpsLossOfLock loss_of_lock;
int32_t bit_number;
int16_t time_from_last_bit_ms;
double doppler_shift_hz;
double doppler_shift_uncertainty_hz;
GpsMultipathIndicator multipath_indicator;
double snr_db;
double elevation_deg;
double elevation_uncertainty_deg;
double azimuth_deg;
double azimuth_uncertainty_deg;
bool used_in_fix;
} GpsMeasurement;
/**
* Represents a GNSS Measurement, it contains raw and computed information.
*
* Independence - All signal measurement information (e.g. sv_time,
* pseudorange_rate, multipath_indicator) reported in this struct should be
* based on GNSS signal measurements only. You may not synthesize measurements
* by calculating or reporting expected measurements based on known or estimated
* position, velocity, or time.
*/
typedef struct {
/** set to sizeof(GpsMeasurement) */
size_t size;
/** A set of flags indicating the validity of the fields in this data structure. */
GnssMeasurementFlags flags;
/**
* Satellite vehicle ID number, as defined in GnssSvInfo::svid
* This is a mandatory value.
*/
int16_t svid;
/**
* Defines the constellation of the given SV. Value should be one of those
* GNSS_CONSTELLATION_* constants
*/
GnssConstellationType constellation;
/**
* Time offset at which the measurement was taken in nanoseconds.
* The reference receiver's time is specified by GpsData::clock::time_ns and should be
* interpreted in the same way as indicated by GpsClock::type.
*
* The sign of time_offset_ns is given by the following equation:
* measurement time = GpsClock::time_ns + time_offset_ns
*
* It provides an individual time-stamp for the measurement, and allows sub-nanosecond accuracy.
* This is a mandatory value.
*/
double time_offset_ns;
/**
* Per satellite sync state. It represents the current sync state for the associated satellite.
* Based on the sync state, the 'received GPS tow' field should be interpreted accordingly.
*
* This is a mandatory value.
*/
GnssMeasurementState state;
/**
* The received GNSS Time-of-Week at the measurement time, in nanoseconds.
* Ensure that this field is independent (see comment at top of
* GnssMeasurement struct.)
*
* For GPS & QZSS, this is:
* Received GPS Time-of-Week at the measurement time, in nanoseconds.
* The value is relative to the beginning of the current GPS week.
*
* Given the highest sync state that can be achieved, per each satellite, valid range
* for this field can be:
* Searching : [ 0 ] : GNSS_MEASUREMENT_STATE_UNKNOWN
* C/A code lock : [ 0 1ms ] : GNSS_MEASUREMENT_STATE_CODE_LOCK is set
* Bit sync : [ 0 20ms ] : GNSS_MEASUREMENT_STATE_BIT_SYNC is set
* Subframe sync : [ 0 6s ] : GNSS_MEASUREMENT_STATE_SUBFRAME_SYNC is set
* TOW decoded : [ 0 1week ] : GNSS_MEASUREMENT_STATE_TOW_DECODED is set
*
* Note well: if there is any ambiguity in integer millisecond,
* GNSS_MEASUREMENT_STATE_MSEC_AMBIGUOUS should be set accordingly, in the 'state' field.
*
* This value must be populated if 'state' != GNSS_MEASUREMENT_STATE_UNKNOWN.
*
* For Glonass, this is:
* Received Glonass time of day, at the measurement time in nanoseconds.
*
* Given the highest sync state that can be achieved, per each satellite, valid range for
* this field can be:
* Searching : [ 0 ] : GNSS_MEASUREMENT_STATE_UNKNOWN
* C/A code lock : [ 0 1ms ] : GNSS_MEASUREMENT_STATE_CODE_LOCK is set
* Symbol sync : [ 0 10ms ] : GNSS_MEASUREMENT_STATE_SYMBOL_SYNC is set
* Bit sync : [ 0 20ms ] : GNSS_MEASUREMENT_STATE_BIT_SYNC is set
* String sync : [ 0 2s ] : GNSS_MEASUREMENT_STATE_GLO_STRING_SYNC is set
* Time of day : [ 0 1day ] : GNSS_MEASUREMENT_STATE_GLO_TOD_DECODED is set
*
* For Beidou, this is:
* Received Beidou time of week, at the measurement time in nanoseconds.
*
* Given the highest sync state that can be achieved, per each satellite, valid range for
* this field can be:
* Searching : [ 0 ] : GNSS_MEASUREMENT_STATE_UNKNOWN
* C/A code lock: [ 0 1ms ] : GNSS_MEASUREMENT_STATE_CODE_LOCK is set
* Bit sync (D2): [ 0 2ms ] : GNSS_MEASUREMENT_STATE_BDS_D2_BIT_SYNC is set
* Bit sync (D1): [ 0 20ms ] : GNSS_MEASUREMENT_STATE_BIT_SYNC is set
* Subframe (D2): [ 0 0.6s ] : GNSS_MEASUREMENT_STATE_BDS_D2_SUBFRAME_SYNC is set
* Subframe (D1): [ 0 6s ] : GNSS_MEASUREMENT_STATE_SUBFRAME_SYNC is set
* Time of week : [ 0 1week ] : GNSS_MEASUREMENT_STATE_TOW_DECODED is set
*
* For Galileo, this is:
* Received Galileo time of week, at the measurement time in nanoseconds.
*
* E1BC code lock : [ 0 4ms ] : GNSS_MEASUREMENT_STATE_GAL_E1BC_CODE_LOCK is set
* E1C 2nd code lock: [ 0 100ms ] :
* GNSS_MEASUREMENT_STATE_GAL_E1C_2ND_CODE_LOCK is set
*
* E1B page : [ 0 2s ] : GNSS_MEASUREMENT_STATE_GAL_E1B_PAGE_SYNC is set
* Time of week: [ 0 1week ] : GNSS_MEASUREMENT_STATE_TOW_DECODED is set
*
* For SBAS, this is:
* Received SBAS time, at the measurement time in nanoseconds.
*
* Given the highest sync state that can be achieved, per each satellite,
* valid range for this field can be:
* Searching : [ 0 ] : GNSS_MEASUREMENT_STATE_UNKNOWN
* C/A code lock: [ 0 1ms ] : GNSS_MEASUREMENT_STATE_CODE_LOCK is set
* Symbol sync : [ 0 2ms ] : GNSS_MEASUREMENT_STATE_SYMBOL_SYNC is set
* Message : [ 0 1s ] : GNSS_MEASUREMENT_STATE_SBAS_SYNC is set
*/
int64_t received_sv_time_in_ns;
/**
* 1-Sigma uncertainty of the Received GPS Time-of-Week in nanoseconds.
*
* This value must be populated if 'state' != GPS_MEASUREMENT_STATE_UNKNOWN.
*/
int64_t received_sv_time_uncertainty_in_ns;
/**
* Carrier-to-noise density in dB-Hz, typically in the range [0, 63].
* It contains the measured C/N0 value for the signal at the antenna port.
*
* This is a mandatory value.
*/
double c_n0_dbhz;
/**
* Pseudorange rate at the timestamp in m/s. The correction of a given
* Pseudorange Rate value includes corrections for receiver and satellite
* clock frequency errors. Ensure that this field is independent (see
* comment at top of GnssMeasurement struct.)
*
* It is mandatory to provide the 'uncorrected' 'pseudorange rate', and provide GpsClock's
* 'drift' field as well (When providing the uncorrected pseudorange rate, do not apply the
* corrections described above.)
*
* The value includes the 'pseudorange rate uncertainty' in it.
* A positive 'uncorrected' value indicates that the SV is moving away from the receiver.
*
* The sign of the 'uncorrected' 'pseudorange rate' and its relation to the sign of 'doppler
* shift' is given by the equation:
* pseudorange rate = -k * doppler shift (where k is a constant)
*
* This should be the most accurate pseudorange rate available, based on
* fresh signal measurements from this channel.
*
* It is mandatory that this value be provided at typical carrier phase PRR
* quality (few cm/sec per second of uncertainty, or better) - when signals
* are sufficiently strong & stable, e.g. signals from a GPS simulator at >=
* 35 dB-Hz.
*/
double pseudorange_rate_mps;
/**
* 1-Sigma uncertainty of the pseudorange_rate_mps.
* The uncertainty is represented as an absolute (single sided) value.
*
* This is a mandatory value.
*/
double pseudorange_rate_uncertainty_mps;
/**
* Accumulated delta range's state. It indicates whether ADR is reset or there is a cycle slip
* (indicating loss of lock).
*
* This is a mandatory value.
*/
GnssAccumulatedDeltaRangeState accumulated_delta_range_state;
/**
* Accumulated delta range since the last channel reset in meters.
* A positive value indicates that the SV is moving away from the receiver.
*
* The sign of the 'accumulated delta range' and its relation to the sign of 'carrier phase'
* is given by the equation:
* accumulated delta range = -k * carrier phase (where k is a constant)
*
* This value must be populated if 'accumulated delta range state' != GPS_ADR_STATE_UNKNOWN.
* However, it is expected that the data is only accurate when:
* 'accumulated delta range state' == GPS_ADR_STATE_VALID.
*/
double accumulated_delta_range_m;
/**
* 1-Sigma uncertainty of the accumulated delta range in meters.
* This value must be populated if 'accumulated delta range state' != GPS_ADR_STATE_UNKNOWN.
*/
double accumulated_delta_range_uncertainty_m;
/**
* Carrier frequency at which codes and messages are modulated, it can be L1 or L2.
* If the field is not set, the carrier frequency is assumed to be L1.
*
* If the data is available, 'flags' must contain
* GNSS_MEASUREMENT_HAS_CARRIER_FREQUENCY.
*/
float carrier_frequency_hz;
/**
* The number of full carrier cycles between the satellite and the receiver.
* The reference frequency is given by the field 'carrier_frequency_hz'.
* Indications of possible cycle slips and resets in the accumulation of
* this value can be inferred from the accumulated_delta_range_state flags.
*
* If the data is available, 'flags' must contain
* GNSS_MEASUREMENT_HAS_CARRIER_CYCLES.
*/
int64_t carrier_cycles;
/**
* The RF phase detected by the receiver, in the range [0.0, 1.0].
* This is usually the fractional part of the complete carrier phase measurement.
*
* The reference frequency is given by the field 'carrier_frequency_hz'.
* The value contains the 'carrier-phase uncertainty' in it.
*
* If the data is available, 'flags' must contain
* GNSS_MEASUREMENT_HAS_CARRIER_PHASE.
*/
double carrier_phase;
/**
* 1-Sigma uncertainty of the carrier-phase.
* If the data is available, 'flags' must contain
* GNSS_MEASUREMENT_HAS_CARRIER_PHASE_UNCERTAINTY.
*/
double carrier_phase_uncertainty;
/**
* An enumeration that indicates the 'multipath' state of the event.
*
* The multipath Indicator is intended to report the presence of overlapping
* signals that manifest as distorted correlation peaks.
*
* - if there is a distorted correlation peak shape, report that multipath
* is GNSS_MULTIPATH_INDICATOR_PRESENT.
* - if there is not a distorted correlation peak shape, report
* GNSS_MULTIPATH_INDICATOR_NOT_PRESENT
* - if signals are too weak to discern this information, report
* GNSS_MULTIPATH_INDICATOR_UNKNOWN
*
* Example: when doing the standardized overlapping Multipath Performance
* test (3GPP TS 34.171) the Multipath indicator should report
* GNSS_MULTIPATH_INDICATOR_PRESENT for those signals that are tracked, and
* contain multipath, and GNSS_MULTIPATH_INDICATOR_NOT_PRESENT for those
* signals that are tracked and do not contain multipath.
*/
GnssMultipathIndicator multipath_indicator;
/**
* Signal-to-noise ratio at correlator output in dB.
* If the data is available, 'flags' must contain GNSS_MEASUREMENT_HAS_SNR.
* This is the power ratio of the "correlation peak height above the
* observed noise floor" to "the noise RMS".
*/
double snr_db;
} GnssMeasurement;
/**
* Legacy struct to represents a reading of GPS measurements.
* Deprecated, to be removed in the next Android release.
* Use GnssData instead.
*/
typedef struct {
/** set to sizeof(GpsData) */
size_t size;
size_t measurement_count;
GpsMeasurement measurements[GPS_MAX_MEASUREMENT];
/** The GPS clock time reading. */
GpsClock clock;
} GpsData;
/**
* Represents a reading of GNSS measurements. For devices where GnssSystemInfo's
* year_of_hw is set to 2016+, it is mandatory that these be provided, on
* request, when the GNSS receiver is searching/tracking signals.
*
* - Reporting of GPS constellation measurements is mandatory.
* - Reporting of all tracked constellations are encouraged.
*/
typedef struct {
/** set to sizeof(GnssData) */
size_t size;
/** Number of measurements. */
size_t measurement_count;
/** The array of measurements. */
GnssMeasurement measurements[GNSS_MAX_MEASUREMENT];
/** The GPS clock time reading. */
GnssClock clock;
} GnssData;
/**
* The legacy callback for to report measurements from the HAL.
*
* This callback is deprecated, and will be removed in the next release. Use
* gnss_measurement_callback() instead.
*
* Parameters:
* data - A data structure containing the measurements.
*/
typedef void (*gps_measurement_callback) (GpsData* data);
/**
* The callback for to report measurements from the HAL.
*
* Parameters:
* data - A data structure containing the measurements.
*/
typedef void (*gnss_measurement_callback) (GnssData* data);
typedef struct {
/** set to sizeof(GpsMeasurementCallbacks) */
size_t size;
gps_measurement_callback measurement_callback;
gnss_measurement_callback gnss_measurement_callback;
} GpsMeasurementCallbacks;
/**
* Extended interface for GPS Measurements support.
*/
typedef struct {
/** Set to sizeof(GpsMeasurementInterface) */
size_t size;
/**
* Initializes the interface and registers the callback routines with the HAL.
* After a successful call to 'init' the HAL must begin to provide updates at its own phase.
*
* Status:
* GPS_MEASUREMENT_OPERATION_SUCCESS
* GPS_MEASUREMENT_ERROR_ALREADY_INIT - if a callback has already been registered without a
* corresponding call to 'close'
* GPS_MEASUREMENT_ERROR_GENERIC - if any other error occurred, it is expected that the HAL
* will not generate any updates upon returning this error code.
*/
int (*init) (GpsMeasurementCallbacks* callbacks);
/**
* Stops updates from the HAL, and unregisters the callback routines.
* After a call to stop, the previously registered callbacks must be considered invalid by the
* HAL.
* If stop is invoked without a previous 'init', this function should perform no work.
*/
void (*close) ();
} GpsMeasurementInterface;
/**
* Legacy struct to represents a GPS navigation message (or a fragment of it).
* Deprecated, to be removed in the next Android release.
* Use GnssNavigationMessage instead.
*/
typedef struct {
/** set to sizeof(GpsNavigationMessage) */
size_t size;
int8_t prn;
GpsNavigationMessageType type;
NavigationMessageStatus status;
int16_t message_id;
int16_t submessage_id;
size_t data_length;
uint8_t* data;
} GpsNavigationMessage;
/** Represents a GPS navigation message (or a fragment of it). */
typedef struct {
/** set to sizeof(GnssNavigationMessage) */
size_t size;
/**
* Satellite vehicle ID number, as defined in GnssSvInfo::svid
* This is a mandatory value.
*/
int16_t svid;
/**
* The type of message contained in the structure.
* This is a mandatory value.
*/
GnssNavigationMessageType type;
/**
* The status of the received navigation message.
* No need to send any navigation message that contains words with parity error and cannot be
* corrected.
*/
NavigationMessageStatus status;
/**
* Message identifier. It provides an index so the complete Navigation
* Message can be assembled.
*
* - For GPS L1 C/A subframe 4 and 5, this value corresponds to the 'frame
* id' of the navigation message, in the range of 1-25 (Subframe 1, 2, 3
* does not contain a 'frame id' and this value can be set to -1.)
*
* - For Glonass L1 C/A, this refers to the frame ID, in the range of 1-5.
*
* - For BeiDou D1, this refers to the frame number in the range of 1-24
*
* - For Beidou D2, this refers to the frame number, in the range of 1-120
*
* - For Galileo F/NAV nominal frame structure, this refers to the subframe
* number, in the range of 1-12
*
* - For Galileo I/NAV nominal frame structure, this refers to the subframe
* number in the range of 1-24
*/
int16_t message_id;
/**
* Sub-message identifier. If required by the message 'type', this value
* contains a sub-index within the current message (or frame) that is being
* transmitted.
*
* - For GPS L1 C/A, BeiDou D1 & BeiDou D2, the submessage id corresponds to
* the subframe number of the navigation message, in the range of 1-5.
*
* - For Glonass L1 C/A, this refers to the String number, in the range from
* 1-15
*
* - For Galileo F/NAV, this refers to the page type in the range 1-6
*
* - For Galileo I/NAV, this refers to the word type in the range 1-10+
*/
int16_t submessage_id;
/**
* The length of the data (in bytes) contained in the current message.
* If this value is different from zero, 'data' must point to an array of the same size.
* e.g. for L1 C/A the size of the sub-frame will be 40 bytes (10 words, 30 bits/word).
*
* This is a mandatory value.
*/
size_t data_length;
/**
* The data of the reported GPS message. The bytes (or words) specified
* using big endian format (MSB first).
*
* - For GPS L1 C/A, Beidou D1 & Beidou D2, each subframe contains 10 30-bit
* words. Each word (30 bits) should be fit into the last 30 bits in a
* 4-byte word (skip B31 and B32), with MSB first, for a total of 40
* bytes, covering a time period of 6, 6, and 0.6 seconds, respectively.
*
* - For Glonass L1 C/A, each string contains 85 data bits, including the
* checksum. These bits should be fit into 11 bytes, with MSB first (skip
* B86-B88), covering a time period of 2 seconds.
*
* - For Galileo F/NAV, each word consists of 238-bit (sync & tail symbols
* excluded). Each word should be fit into 30-bytes, with MSB first (skip
* B239, B240), covering a time period of 10 seconds.
*
* - For Galileo I/NAV, each page contains 2 page parts, even and odd, with
* a total of 2x114 = 228 bits, (sync & tail excluded) that should be fit
* into 29 bytes, with MSB first (skip B229-B232).
*/
uint8_t* data;
} GnssNavigationMessage;
/**
* The legacy callback to report an available fragment of a GPS navigation
* messages from the HAL.
*
* This callback is deprecated, and will be removed in the next release. Use
* gnss_navigation_message_callback() instead.
*
* Parameters:
* message - The GPS navigation submessage/subframe representation.
*/
typedef void (*gps_navigation_message_callback) (GpsNavigationMessage* message);
/**
* The callback to report an available fragment of a GPS navigation messages from the HAL.
*
* Parameters:
* message - The GPS navigation submessage/subframe representation.
*/
typedef void (*gnss_navigation_message_callback) (GnssNavigationMessage* message);
typedef struct {
/** set to sizeof(GpsNavigationMessageCallbacks) */
size_t size;
gps_navigation_message_callback navigation_message_callback;
gnss_navigation_message_callback gnss_navigation_message_callback;
} GpsNavigationMessageCallbacks;
/**
* Extended interface for GPS navigation message reporting support.
*/
typedef struct {
/** Set to sizeof(GpsNavigationMessageInterface) */
size_t size;
/**
* Initializes the interface and registers the callback routines with the HAL.
* After a successful call to 'init' the HAL must begin to provide updates as they become
* available.
*
* Status:
* GPS_NAVIGATION_MESSAGE_OPERATION_SUCCESS
* GPS_NAVIGATION_MESSAGE_ERROR_ALREADY_INIT - if a callback has already been registered
* without a corresponding call to 'close'.
* GPS_NAVIGATION_MESSAGE_ERROR_GENERIC - if any other error occurred, it is expected that
* the HAL will not generate any updates upon returning this error code.
*/
int (*init) (GpsNavigationMessageCallbacks* callbacks);
/**
* Stops updates from the HAL, and unregisters the callback routines.
* After a call to stop, the previously registered callbacks must be considered invalid by the
* HAL.
* If stop is invoked without a previous 'init', this function should perform no work.
*/
void (*close) ();
} GpsNavigationMessageInterface;
/**
* Interface for passing GNSS configuration contents from platform to HAL.
*/
typedef struct {
/** Set to sizeof(GnssConfigurationInterface) */
size_t size;
/**
* Deliver GNSS configuration contents to HAL.
* Parameters:
* config_data - a pointer to a char array which holds what usually is expected from
file(/etc/gps.conf), i.e., a sequence of UTF8 strings separated by '\n'.
* length - total number of UTF8 characters in configuraiton data.
*
* IMPORTANT:
* GPS HAL should expect this function can be called multiple times. And it may be
* called even when GpsLocationProvider is already constructed and enabled. GPS HAL
* should maintain the existing requests for various callback regardless the change
* in configuration data.
*/
void (*configuration_update) (const char* config_data, int32_t length);
} GnssConfigurationInterface;
__END_DECLS
#endif /* ANDROID_INCLUDE_HARDWARE_GPS_H */